Download PDF by Geological Society Publications: Applications of X-ray computed tomography in the geosciences

By Geological Society Publications

X-ray computed tomography (CT) is a method that permits non-destructive imaging and quantification of inner beneficial properties of gadgets. It was once initially constructed as a clinical imaging strategy, however it is now additionally changing into conventional for the examine of fabrics in engineering and the geosciences. X-ray CT finds changes in density and atomic composition and will accordingly be used for the research of porosity, the relative distribution of contrasting stable stages and the penetration of injected recommendations. As a non-destructive procedure, it truly is supreme for tracking of strategies, equivalent to the flow of options and the behaviour of fabrics less than compression. simply because huge numbers of parallel two-dimensional cross-sections may be got, three-d representations of chosen positive factors should be created. during this ebook, quite a few functions of X-ray CT within the geosciences are illustrated via papers protecting quite a lot of disciplines, together with petrology, soil technological know-how, petroleum geology, geomechanics and sedimentology.

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FLOHR, T. & KLINGENBECK-REGN, K. 1999. Efficient object scatter correction algorithm for third and fourth generation CT scanners. European Radiology, 9, 563-569. PETERS, EJ. D. 1990. Visualization of fluid displacements in heterogeneities in porous media using computed tomography imaging. Journal of Petroleum Science and Engineering, 4, 155-168. PETERS, EJ. & AFZAL, N. 1992. Characterization of Heterogeneities in Permeable Media with Computed Tomography Imaging, Journal of Petroleum Science and Engineering, 1, 283-296.

4)). g. with potassium iodide or potassium bromide) or quartz sample can be used. The weight percentage of the solution should be selected to match the CT number of the rock (refer to Table 1). e. a flat image). Quartz is useful for this purpose if the rock under consideration is a sandstone. Vinegar & Wellington (1987) discuss choice of dopants and calibration in detail. Object shape can also lead to artefacts. The cross-sectional geometry of the scanner gantry is circular and the machine delivers the best images of objects that are also circular and symmetrical in cross-section.

Petroleum Society of CIM, Calgary, 8-11 June, AMERICAN PETROLEUM INSTITUTE 1960. API Recom605-620. mended Practice for Core Analysis Procedures. A. & SEPEHRNOORI, K. 1991. SimuReport 40. G. R. 2001. Surfactant characterized using CT scanning. In: Proceedings concentration and end effects on foam flow in of the Western Regional Meeting, Long Beach, Caliporous media. Transport in Porous Media, 43, fornia, 20-22 March, Paper SPE 21757. 511-536. V. & REISCHER, AJ. T. 1980. Image Reconstruction from Projections.

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